Unable to build VirtualBox kernel modules from source

[hopeful1]

I ran ./configure from my VirtualBox-5.2.2 and here is my terminal output:

Checking for environment: Determined build machine: linux.amd64, target machine: linux.amd64, OK.
...
Checking for Linux kernel sources: found version 4.13.8, OK.
Detected Linux >= 4.8 -- disabling compiling of Linux kernel modules.
Checking for ALSA: found version 1.1.3, OK.
Checking for libdevmapper: found version 1.02.137 (2016-11-30), OK.
Checking for libcap library: found, OK.
Checking for compiler.h: compiler.h not found, OK.
Checking for 32-bit support: OK.
Checking for makeself: found version 2.3.0, OK.

I followed the build instructions from the VirtualBox website and the source code is from the official website.
'./configure' command runs ok but for the "Detected Linux >= 4.8 -- disabling compiling of Linux kernel modules." line shown above.
The 'kmk all' command appears to have run fine.
I go to the 'out/linux.amd64/release/bin/src', run 'make'. No errors but no modules after 'make install'
'./VirtualBox' runs from the 'out/linux.amd64/release/bin' directory


How do I build the kernel modules for kernel > 4.8 ?
This is my first post, please pardon any errors.
Thanks for your help.

[hopeful1]

Issue resolved.
Had to disable secure boot.

[winter]

Issue resolved.
Had to disable secure boot.

Could you please show me how to disable secure boot?

[scottgus1]

Could you please show me how to disable secure boot?

I'd be surprised if OP comes back 6 years later. But Secure Boot is not a Virtualbox thing. It's a host BIOS and OS thing. web-search how to disable it on your physical PC and host OS.

[winter]

Could you please show me how to disable secure boot?

I'd be surprised if OP comes back 6 years later. But Secure Boot is not a Virtualbox thing. It's a host BIOS and OS thing. web-search how to disable it on your physical PC and host OS.

Thank you and I just give up building vbox 5.1.30 on kernel 4.15.0.